Measurement method

Abstract

A method for quantifying the soil dispersion capacity of a cleaning product or component thereof where the method comprises the following steps: a) making a solution comprising the cleaning product or component thereof; b) adding the soil to the cleaning product or component thereof solution to form a mixture; and c) measuring the light blocked by the mixture.

What is claimed is: 
     
       1. A method for quantifying the soil dispersion capacity of a cleaning product or component thereof where the method comprises the following steps:
 a) making a solution comprising the cleaning product or component thereof, the solution being contained in a temperature controlled vessel; 
 b) adding the soil to the cleaning product or component thereof solution to form a mixture; 
 c) measuring the light blocked by the mixture at an initial temperature of 30° C.; 
 d) increasing the temperature of the mixture to about 50° C. and measuring the light blocked by the mixture at 50° C.; and 
 e) decreasing the temperature of the mixture to about 20° C. and measuring the light blocked by the mixture at 20° C.; 
 wherein the light blocked by the mixture is quantified by measuring obscuration using a particle size analyzer. 
 
     
     
       2. A method according to  claim 1  comprising the additional step of insoluble separation from the solution of step a). 
     
     
       3. A method according to  claim 1  comprising the step of measuring the light blocked by the solution of step a) and subtracting it to the light blocked by the mixture formed in step b). 
     
     
       4. A method according to  claim 1  wherein the light blocked by the mixture is measured under simulated appliance conditions. 
     
     
       5. A method according to  claim 1  wherein the temperature controlled vessel is a jacketed vessel. 
     
     
       6. A method according to  claim 1  wherein the soil is grease or any particulate soil. 
     
     
       7. A method according to  claim 1  wherein the cleaning product component is a surfactant or a surfactant system.